Title :
An impact sound source useful for Arctic remote sensing
Author :
De Heering, Philippe
Author_Institution :
Canadian Astronaut Ltd., Ottawa, Ont., Canada
fDate :
4/1/1989 12:00:00 AM
Abstract :
The impact on an ice surface of an energetic projectile, such as a rifle bullet, which creates an acoustic impulse in the water whose properties are useful for Arctic remote sensing, is discussed. The source level of these impulses is typically between 220 and 230 dB Re 1 μPa at 1m and most of their energy is within the band 500 Hz to 3 kHz. Possible remote sensing applications are reviewed together with available experimental data. These include the measurement of ice properties and water depth, as well as bottom imaging. It is concluded that the source described has potential for Arctic acoustic remote sensing applications where probability and ease of deployment are important and the required number of measurements is not too large
Keywords :
acoustic applications; acoustic radiators; bathymetry; collision processes; oceanographic equipment; oceanographic techniques; oceanography; remote sensing; sea ice; 0.5 to 3 kHz; 200 kPa; Arctic acoustic remote sensing; acoustic impulse; acoustic source properties; acoustic wave pressures; bottom imaging; coastal oceanography; energetic projectile; ice impact sound source; ice properties; ice surface impact; ocean remote sensing; rifle bullet; sea ice properties; water depth; Acoustic measurements; Arctic; Extraterrestrial measurements; Ice surface; Ice thickness; Pressure measurement; Remote sensing; Sea measurements; Sonar equipment; Water;
Journal_Title :
Oceanic Engineering, IEEE Journal of
